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Solidity Tutorial: all about Mappings

The School Cloackroom by Malcolm Evans, a cartoon drawing used as an analogy to explain mappings in Solidity (taken from

Table of Content

  • Introduction to mappings
  • What mappings are used for?
  • How mappings are represented in storage?
  • Key and Values types allowed
  • Operations on Mappings
  • Nested Mappings
  • Mappings as function parameters



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Jean Cvllr

Jean Cvllr

Smart Contract engineer at @LUKSO. Full Stack Developer.